655044651 has 24 divisors (see below), whose sum is σ = 995065344. Its totient is φ = 430534440.

The previous prime is 655044619. The next prime is 655044667. The reversal of 655044651 is 156440556.

655044651 is a `hidden beast` number, since 6 + 550 + 44 + 65 + 1 = 666.

It is not a de Polignac number, because 655044651 - 2⁵ = 655044619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (655044751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1731 + ... + 36236.

It is an arithmetic number, because the mean of its divisors is an integer number (41461056).

Almost surely, 2^655044651 is an apocalyptic number.

655044651 is a deficient number, since it is larger than the sum of its proper divisors (340020693).

655044651 is an equidigital number, since it uses as much as digits as its factorization.

655044651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38053 (or 38041 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 655044651 is about 25593.8400987425. The cubic root of 655044651 is about 868.4742938511.

The spelling of 655044651 in words is "six hundred fifty-five million, forty-four thousand, six hundred fifty-one".